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Exchange Connectivity logging must be enabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-69795 EX13-EG-000035 SV-84417r1_rule Medium
Description
A connectivity log is a record of the SMTP connection activity of the outbound message delivery queues to the destination mailbox server, smart host, or domain. Connectivity logging is available on Hub Transport servers and Edge Transport servers. By default, connectivity logging is disabled. If events are not recorded, it may be difficult or impossible to determine the root cause of system problems or the unauthorized activities of malicious users. NOTE: Transport configuration settings apply to the organization/global level of the Exchange SMTP path. By checking and setting them at the Hub server, the setting will apply to both Hub and Edge roles.
STIG Date
MS Exchange 2013 Edge Transport Server Security Technical Implementation Guide 2019-03-11

Details

Check Text ( C-70247r1_chk )
Open the Exchange Management Shell and enter the following command:

Get-TransportService | Select Name, Identity, ConnectivityLogEnabled

If the value of ConnectivityLogEnabled is not set to True, this is a finding.
Fix Text (F-76007r1_fix)
Open the Exchange Management Shell and enter the following command:

Set-TransportService -Identity <'IdentityName'> -ConnectivityLogEnabled $true

Note: The value must be in single quotes.